From owner-xj-digest-at-digest.net Tue Dec 9 09:54:40 2003 From: xj-digest xj-digest Tuesday, December 9 2003 Volume 01 : Number 1748 Forum for Discussion of XJ cherokees and wagoneers Brian Colucci Digest Coordinator Contents: xj: Re: Slow XJ's & Yes It Is True The Admiral Is Back Re: xj: won't go fast... xj: AW4 shifting problems Re: xj: AW4 shifting problems Re: xj: won't go fast... Re: xj: AW4 shifting problems XJ Digest Home Page: http://www.digest.net/jeep/xj/ Send submissions to xj-digest-at-digest.net Send administrative requests to xj-digest-request-at-digest.net To unsubscribe, include the word unsubscribe by itself in the body of the message, unless you are sending the request from a different address than the one that appears on the list. Include the word help in a message to xj-digest-request to get a list of other majordomo commands. ---------------------------------------------------------------------- Date: Mon, 8 Dec 2003 08:26:31 -0500 From: "Don Hansen" Subject: xj: Re: Slow XJ's & Yes It Is True The Admiral Is Back I wonder if the fluid and filter have ever been changed? Try the easy way first. It occaisionally works!!!!!! - -Don Hansen Braintree, MA. fixxa-at-beld.net 1995 XJ Cherokee Sport "Henrietta" 1998 GMC Jimmy SLT 1988 Grand Wagoneer "Edna" 1987 Jeep J-20 Pickup "Miss Agnes" (Retired) 1989 MJ Comanche Pickup (2WD) "Martha" 1988 XJ (Retired, but coming back!) - ----- Original Message ----- From: "Colucci B" To: "XJ GROUP" ; "john" Sent: Sunday, December 07, 2003 10:43 PM Subject: xj: Slow XJ's & Yes It Is True The Admiral Is Back > Greetings to the XJ World! > > Yes I am really back as the owner of an XJ; a nice 87 Wagoneer. I > purchased the little fellow off a guy on E-Bay who lives in CT. He got > it from one of those auctions where people donate their cars to charity, > and take the tax write off. > > It is obvious that the little XJ was pretty well taken care of until its > owner just gave up on it. I'm thinking it was an older person who used > to drive the XJ to his fishing cabin only on the week-end. > > Yes it has no get up & go. The engine is strong enough but the trany > just seems to move its way right through the lower gears until hits > fourth. You have to push the accelerator a good 3/4 of the way to the > floor to get any go power at all; and even then it just does not want to > come out of fourth unless you floor it; then it might go back to third. > I wish I had a tach to better monitor this entire event. Maybe the > guy with the 85 cream color farm Wagoneer would like to sell me his > instrument cluster, and grill & headlight assembly. Then I could get > this Jeep the way I want it. I have tried the trany switch in both > power & comfort modes. It still seems gutless in each mode. My old 88 > XJ used to really get up & go with the trany switch in the power mode. > It was almost frightening how much power that XJ had. > > Has anybody ever tried to disconnect the trany computer & drive their > XJ? Can you drive the truck with this computer disconnected. Is there > a fuse for this computer? Does anybody know how the computer acts if it > has been toasted? Does it have like a limp home mode? It sure feels > like it is limping right now. I am almost wondering if a wire harness > is disconnected. That might explain why the dash switch has no affect > on the trany shift pattern. > > > > Until The Next Dimension, > Admiral "Coluch." > Starfleet Headquarters > Ohio Post > END TRANSMISSION.................................... ------------------------------ Date: Mon, 8 Dec 2003 08:32:27 -0700 From: "Aaron Storms" Subject: Re: xj: won't go fast... Haven't caught the whole thread, but I'm assuming you've already checked the cat to ensure it's not clogged? Aaron - ----- Original Message ----- From: "john meister" To: Sent: Monday, December 08, 2003 2:02 AM Subject: Re: xj: won't go fast... > Is the TPS the sensor on the left as you look at the front of the > Throttle body? > > I pulled that one off and cleaned it... the oen to the right > is spring loaded, I cleaned that too... > > any pictures? > > thanx, > john > > Alan wrote: > > Hey John > > > > Make sure the TPS is adjusted properly. I messed around with mine > > once and when it was way off...the tranny would up shift early. Also > > make sure you are going full throttle too, as sometimes those thottle > > cables stretch. I fixed my stretch by putting a washer on the cable by > > the gas pedal, so it would go full throttle without pushing hard on the > > pedal. > > > > Mahalo Alan Chung 90 Cherokee Limited 4.6 > > > > > > > > __________________________________ > > Do you Yahoo!? > > New Yahoo! Photos - easier uploading and sharing. > > http://photos.yahoo.com/ > > > > -- > ---- > ------------------------------------------------------------------------- > ** john-at-wagoneers.com ** Snohomish, Washington USA - > where Jeeps don't rust, they mold. ** trust Jesus ** > ------------------------------------------------------------------------- > The revolt is underway, the penguin is coming... > I can hear the slap of his little feet... > (using Mozilla Thunderbird on SUSE 9.0 Linux... and loving it...) > ------------------------------------------------------------------------- ------------------------------ Date: Mon, 8 Dec 2003 22:13:03 -0800 From: "Don George" Subject: xj: AW4 shifting problems Interesting to read about the AW4 problems. I've been working on one for a couple of months. I bought a nice running 2wd '89 Comanche with a great body for $400. It was cheap because the tranny would usually not shift. Thinking that it was either the tranny or the TCU, I bought an '87 4wd Cherokee donor with good running gear for $700. After I got everything changed over, it had the same problems, so I changed the TCU, and then the main brain-still had the same problems. I thought sure the TCU change would fix it because it shifted normally for the first few miles and as it warmed up it would start dropping out of OD, then 3rd, then all the way to 1st and I would have to creep home at 15 mph. I finally got to the point where I unplugged the TCU just to see what would happen-the first 3 gears worked fine except I had to manually shift the gears. Like if I start out in "3", it actually starts out in 3 (just the thing for starting off on the ice). I don't really know if it will go into OD, I think not. Anyway, it'll cruise down the road at 55 without over revving so at least I can get it to the dealer and get it scanned. Hopefully they'll be able to narrow it down enough to find the problem. I'm thinking it's a broken wire. Someone earlier mentioned a bad vaccum modualator, but I don't think the AW4 uses one. Don Eugene, OR ------------------------------ Date: Mon, 8 Dec 2003 23:18:00 -0800 (PST) From: Alan Subject: Re: xj: AW4 shifting problems Heya Actually, when you disconnect the TCU, you get what gear you select out of the shifter...ie 1 = 1st, 3 = 3rd, OD = 4th. I dont recommend driving like this very long as there is no torque converter lock up without the TCU plugged in. Mahalo Alan Chung 90 Cherokee Limited 4.6 P.S. I have never had a problem with the shifting on my AW4. The only problem I have now is a flaky Neutral safety switch. Its an easy fix though, just take apart the N safety switch and re-lube it up. __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ ------------------------------ Date: Tue, 9 Dec 2003 00:47:05 -0800 (PST) From: Alan Subject: Re: xj: won't go fast... Hey John Uhh...the TPS looks like a potentiometer type of do hicky. Its the one with the lever on it. The Idle Stepper motor is the one that is spring loaded, the smaller canister looking do hicky. And btw, be sure the TPS's little lever is pushed by the little lever on the throttle body side. To adjust the TPS...the input voltage is 4.67 to 5 volts. That is check the connector on the engine harness side on pins AB or AD. One of these will get you the voltage you need. After you determine thge input voltage, determine the output voltage by plugging the TPS connector in, and the breaking the back of the connector check AD or AB again. This one will result in a lower voltage than the harness side. You want the fraction to equal ~3.88/4.67 volts. Therfore you adjust the output voltage to 3.88 if you have a input voltage of 4.67. You adjust the TPS by loosening its mounting screws and rotating it. This is form the shop manual itself, but if you take it to a dealer, the DRB II scanner usually wants a idle % of 11-12% which is closed throttle. Anything higher is partial open throttle which can cause high idle. If it is below 10% or so, when you go full thorttle, it wont see the WOT % from the TPS, this resulting is early shifting. Remember this adjustment pertains to only auto trannys. Manual trannies have a different TPS. So, how is that? Mahalo Alan Chung 90 Cherokee Limited 4.6 P.S. I know Ive written this before, so Im writing it from memory. Mayeb you have it archived somewhere in your vast XJ database John? __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ ------------------------------ Date: Tue, 9 Dec 2003 08:17:47 -0500 From: "Don Hansen" Subject: Re: xj: AW4 shifting problems When did they start using the 5 wire, big bucks safety switch? If its not giving the TCU the right info...??? - -Don Hansen Braintree, MA. fixxa-at-beld.net 1995 XJ Cherokee Sport "Henrietta" 1998 GMC Jimmy SLT 1988 Grand Wagoneer "Edna" 1987 Jeep J-20 Pickup "Miss Agnes" (Retired) 1989 MJ Comanche Pickup (2WD) "Martha" 1988 XJ (Retired, but coming back!) - ----- Original Message ----- From: "Alan" To: Sent: Tuesday, December 09, 2003 2:18 AM Subject: Re: xj: AW4 shifting problems > Heya > > Actually, when you disconnect the TCU, you get what gear you select > out of the shifter...ie 1 = 1st, 3 = 3rd, OD = 4th. I dont recommend > driving like this very long as there is no torque converter lock up > without the TCU plugged in. > > Mahalo Alan Chung 90 Cherokee Limited 4.6 > > P.S. I have never had a problem with the shifting on my AW4. The only > problem I have now is a flaky Neutral safety switch. Its an easy fix > though, just take apart the N safety switch and re-lube it up. > > > __________________________________ > Do you Yahoo!? > New Yahoo! Photos - easier uploading and sharing. > http://photos.yahoo.com/ ------------------------------ End of xj-digest V1 #1748 *************************